ISO7064-standardised Check Digits
Applied to Blood Bag Numbers
The personel at the blood product consumer's site has to be advised by means
of written standard operation procedures or equivalents (e.g. extended alert
dialog), that check digit procedures do not provide full security against
transmission and storage errors. This is obvious from the stochastic fact, that
10% of randomised
numerical strings are found to be "valid" by MOD11,10 proofreading.
Error events have to be monitored and analysed by the responsible quality
supervisor. Troubleshooting has to be initiated in case of error events by
revision of the IT-equipment and/or instructions to the involved personel. Only
combined with event-related troubleshooting check digit application enhances
reliability of lot documentation.
